General Awareness ยท Geography

Minerals and Ores

1,167 Questions

Minerals and ores encompass the extraction, identification, and economic significance of naturally occurring crystalline substances. Topics cover specific ores like cinnabar and bauxite, alongside global mineral resource distribution. Candidates preparing for general awareness and geography sections should review these questions to master regional and global mineral reserves.

Ore identificationMineral extractionGlobal mineral reservesIndustrial minerals

Minerals and Ores Questions

Multiple choice

Which type of mineral deposit is formed by the accumulation of heavy minerals in placer deposits?

  1. Hydrothermal Deposits

  2. Sedimentary Deposits

  3. Magmatic Deposits

  4. Metamorphic Deposits
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sedimentary mineral deposits are formed by the accumulation of heavy minerals, such as gold, platinum, and diamonds, in placer deposits through the processes of erosion, transportation, and deposition.

Multiple choice

The Mohs scale is used to measure what property of a mineral?

  1. Hardness

  2. Cleavage

  3. Luster

  4. Color

  5. Density
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Mohs scale is a measure of a mineral's resistance to scratching, with harder minerals able to scratch softer ones.

Multiple choice

Which mineral is known for its perfect cubic cleavage?

  1. Diamond

  2. Halite

  3. Galena

  4. Fluorite
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Halite, also known as rock salt, exhibits perfect cubic cleavage, meaning it breaks into cube-shaped fragments.

Multiple choice

Which mineral is known for its metallic luster?

  1. Galena

  2. Quartz

  3. Feldspar

  4. Calcite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Galena, a lead sulfide mineral, exhibits a metallic luster, meaning it reflects light like a metal.

Multiple choice

What is the term used to describe the resistance of a mineral to scratching?

  1. Hardness

  2. Cleavage

  3. Luster

  4. Color
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hardness refers to the resistance of a mineral to being scratched by another mineral.

Multiple choice

Which mineral is considered the hardest on the Mohs scale of hardness?

  1. Diamond

  2. Corundum

  3. Topaz

  4. Quartz
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Diamond is the hardest mineral on the Mohs scale, with a hardness of 10.

Multiple choice

What is the term used to describe the streak of a mineral?

  1. Color

  2. Luster

  3. Hardness

  4. Cleavage
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The streak of a mineral refers to the color of the powder it produces when rubbed against a streak plate.

Multiple choice

Which mineral is known for its white streak?

  1. Galena

  2. Quartz

  3. Feldspar

  4. Calcite
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Quartz, a common rock-forming mineral, has a white streak.

Multiple choice

Which mineral is known for its high specific gravity?

  1. Galena

  2. Quartz

  3. Feldspar

  4. Calcite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Galena, a lead sulfide mineral, has a high specific gravity due to its high density.

Multiple choice

Which mineral is known for its effervescence when reacted with hydrochloric acid?

  1. Galena

  2. Quartz

  3. Feldspar

  4. Calcite
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Calcite, a carbonate mineral, reacts with hydrochloric acid to produce carbon dioxide gas, causing effervescence.

Multiple choice

What is the term used to describe the way a mineral reacts to a magnet?

  1. Magnetic susceptibility

  2. Luster

  3. Hardness

  4. Cleavage
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Magnetic susceptibility refers to the degree to which a mineral is attracted or repelled by a magnet.

Multiple choice

Which mineral is known for its strong magnetic susceptibility?

  1. Galena

  2. Quartz

  3. Feldspar

  4. Magnetite
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Magnetite, an iron oxide mineral, is strongly attracted to magnets due to its high magnetic susceptibility.

Multiple choice

What is the name of the magnetic mineral that is most commonly used in paleomagnetic studies?

  1. Magnetite

  2. Hematite

  3. Pyrite

  4. Ilmenite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Magnetite is the magnetic mineral that is most commonly used in paleomagnetic studies. This is because magnetite is a very stable mineral and it retains its magnetic properties over long periods of time.

Multiple choice

Which mineral was used by ancient Egyptians to create intricate hieroglyphs and sculptures?

  1. Gold

  2. Silver

  3. Limestone

  4. Granite
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Limestone was a widely used material in ancient Egypt due to its abundance and ease of carving, making it ideal for creating hieroglyphs and sculptures.

Multiple choice

What mineral was prized by the Incas and used to create intricate jewelry and ceremonial objects?

  1. Gold

  2. Silver

  3. Copper

  4. Jade
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gold held immense cultural and economic significance for the Incas, who believed it to be the tears of the sun god. They crafted exquisite jewelry and ceremonial objects using this precious metal.